Catechin beverage consumption was associated with a significantly higher ventilation threshold during exercise and a higher recovery rate of oxygenated hemoglobin and myoglobin levels after graded cycle exercise when compared to subjects receiving the placebo beverage.

These results indicate that daily consumption of tea catechins increases aerobic capacity when combined with semiweekly light exercise, which may be due to increased skeletal muscle aerobic capacity.

Disclaimer:

This research was conducted by researchers who work for the Biological Science Laboratories of Kao Corporation….who just happen to sell a green tea fitness supplement beverage.

Which doesn’t mean that the science is bogus. Just something to be aware & skeptical of…just like any good scientist.

In green tea’s favor is a ton of science showing a wide range of health benefits associated with green tea catechins. IMHO, it isn’t unlikely that green tea catechins probably have a positive effect on your aerobic capacity. There just isn’t any science (other than this study) on this subject.

But there will be. If you’re interested, I have set up an PubMed feed for “green tea & aerobic capacity” Click on the link and you will have access to the latest published research on how green tea catechins improve (or don’t) aerobic capacity.